分娩正常出生体重儿孕妇孕期体重的变化

Gestational weight gain pattern and birth weight

目的 分析分娩正常出生体重儿孕妇孕期增重的范围 ,为指导孕期营养提供科学依据。 方法 将孕妇按孕前体质指数大小分为 3组 ,计算各组孕妇孕期增重范围。 结果 低体重组、理想体重组及超重组孕妇孕期平均增重分别为 (16 .2± 4 .0 ) kg、 (15 .7± 4 .4 ) kg、 (13.2± 4 .3) kg,低体重及理想体重组妇女孕期增重大于超重妇女 ,差异有显著性 (P<0 .0 1) ,孕中期体重增长幅度大于孕晚期 ;

Objective To evaluate different maternal weight gain during pregnancy in normal birth weight in order to provide a reasonable advice in gestational weight gain. Methods Women were divided into 3 groups according to their prepregnancy body mass index (BMI).Different weight gain during pregnancy were compared among three groups. Results The mean weight gain during pregnancy were (16 15±3 99) kg,(15 72±4 42) kg and (13 22±4 29) kg in low weight,ideal weight and high weight before pregnancy respectively.The weight gain during pregnancy in pre pregnancy low weight and ideal weight groups were higher than that in pre pregnancy with high weight group (P<0 01).Weight gain was higher during second trimester than that during third trimester. Conclusion The result suggested that the gestational weight gain in low weight before pregnancy were related to normal fetal birth weight.